1.新增svg解析操作

Signed-off-by: zhoulisheng1 <zhoulisheng1@huawei.com>

entry/src/main/ets/pages/svgTestCasePage.ets

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+/*
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {SVGParseImpl} from '@ohos/imageknife'
+
+@Entry
+@Component
+struct svgTestCasePage {
+
+  @State pixels:PixelMap = undefined
+
+  build() {
+    Scroll() {
+      Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
+        Flex({direction:FlexDirection.Row}){
+          Button("加载SVG图片")
+            .onClick(()=>{
+
+              globalThis.ImageKnife.getImageKnifeContext().resourceManager.getMedia($r('app.media.ic_svg').id)
+                .then(data => {
+                  console.log('basicTestFileIOPage - 本地加载资源 解析后数据data = ' + data)
+                  let svgImpl = new SVGParseImpl();
+                  svgImpl.parseSvg(data.buffer).then((pixelmap)=>{
+                    this.pixels = pixelmap;
+                  })
+                })
+                .catch(err => {
+                  console.log('basicTestFileIOPage - 本地加载资源err' + JSON.stringify(err));
+                })
+
+            }).margin({left:5}).backgroundColor(Color.Blue)
+
+        }
+        .margin({top:15})
+
+        Text("下面为展示图片区域").margin({top:5})
+        Flex({direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }){
+          Image(this.pixels)
+            .width(400)
+            .height(400)
+            .backgroundColor(Color.Pink)
+        }.width(400).height(400).margin({top:10}).backgroundColor(Color.Pink)
+      }
+    }
+    .width('100%')
+    .height('100%')
+  }
+
+  aboutToAppear() {
+    console.log("aboutToAppear()")
+  }
+  typedArrayToBuffer(array: Uint8Array): ArrayBuffer {
+    return array.buffer.slice(array.byteOffset, array.byteLength + array.byteOffset)
+  }
+}
+
+

imageknife/src/main/ets/components/imageknife/utils/svg/IParseSvg.ets

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+/*
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export interface IParseSvg {
+  // 解析svg
+  parseSvg(imageinfo: ArrayBuffer,size?:{width:number,height:number}): Promise<PixelMap>
+}

imageknife/src/main/ets/components/imageknife/utils/svg/SVGParseImpl.ets

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+/*
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {IParseSvg} from'./IParseSvg'
+import {SVGImageView} from '@ohos/svg'
+export class SVGParseImpl implements IParseSvg{
+  parseSvg(imageinfo: ArrayBuffer,size?:{width:number,height:number}): Promise<PixelMap>{
+    let model = new SVGImageView.SVGImageViewModel();
+    return model.getSVGPixelMap(new Uint8Array(imageinfo),size);
+  }
+}